protected internal CellElement(CellView host, object row, Column column) : base(host)
{
m_Row = row;
m_Column = column;
m_Grid = column.Grid;
m_Style = new Style(null, getBaseStyle());
if (row==null)//if header cell
{
m_ColumnResizeElement = new ColumnResizeElement(host, this);
m_ColumnResizeElement.ZOrder = 1;
}
}
public Grid() : base ()
{
//SetStyle(ControlStyles.OptimizedDoubleBuffer, true); //the CellView is already dbl buffered
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true); //no ERASE BACKGROUND
SetStyle(ControlStyles.UserMouse, true);
base.DoubleBuffered = true;
UpdateStyles();
m_Style = new Style(this, null);
m_HeaderStyle = new Style(this, null);
m_SelectedStyle = new Style(this, null);
BuildDefaultStyle(m_Style);
BuildDefaultHeaderStyle(m_HeaderStyle);
BuildDefaultSelectedStyle(m_SelectedStyle);
m_CellView = new CellView() { Parent = this , TabStop = false};
m_HScrollBar = new HScrollBar() { Parent = this, TabStop = false, Minimum=0, SmallChange=1, LargeChange =1 };
m_HScrollBar.ValueChanged += m_HScrollBar_Scroll;
m_VScrollBar = new VScrollBar() { Parent = this, TabStop = false, Minimum=0, SmallChange=1 };
m_VScrollBar.ValueChanged += m_VScrollBar_Scroll;
m_DataSourceChangedNotificationTimer = new Timer();
m_DataSourceChangedNotificationTimer.Interval = REBUILD_TIMEOUT_MS;
m_DataSourceChangedNotificationTimer.Enabled = false;
m_DataSourceChangedNotificationTimer.Tick += new EventHandler((o, e) =>
{
if (m_RepositioningColumn!=null || m_ResizingColumn!=null ) return;//while grid is being manipulated dont flush timer just yet
m_DataSourceChangedNotificationTimer.Stop();
notifyDataSourceChanged(m_DataSourceChangedNotificationRow);
m_DataSourceChangedNotificationRow = null;
});
}
/// <summary>
/// Builds default style for data cells in selected rows
/// </summary>
public virtual void BuildDefaultSelectedStyle(Style style)
{
// style.HAlignment = HAlignment.Center;
style.BorderTop = new LineStyle(){ Color = Color.Transparent };
style.BorderBottom = new LineStyle(){ Color = Color.Silver};
style.BGKind = BGKind.BackwardDiagonalGradient;//.VerticalGradient;
style.BGColor = Color.FromArgb(199,199,255);
style.BGColor2 = Color.FromArgb(250,250,255);
}
/// <summary>
/// Builds default style for header row cells - column titles
/// </summary>
public virtual void BuildDefaultHeaderStyle(Style style)
{
style.HAlignment = HAlignment.Center;
style.BorderLeft = new LineStyle(){ Color = Color.White };
style.BorderTop = new LineStyle(){ Color = Color.White };
style.BorderBottom = new LineStyle(){ Color = Color.FromArgb(100,100,100) };
style.BGKind = BGKind.HorizontalGradient;
style.BGColor = Color.White;
style.BGColor2 = Color.Silver;
}
/// <summary>
/// Builds default style for data cells in non-selected rows
/// </summary>
public virtual void BuildDefaultStyle(Style style)
{
}
private Brush getBrush(Style style)
{
switch (style.BGKind)
{
case BGKind.Hatched:
{
var result = new HatchBrush(style.BGHatchStyle, style.BGHatchColor,
style.BGColor);
return result;
}
case BGKind.VerticalGradient:
{
var result = new LinearGradientBrush(Region, style.BGColor, style.BGColor2,
LinearGradientMode.Vertical);
return result;
}
case BGKind.HorizontalGradient:
{
var result = new LinearGradientBrush(Region, style.BGColor, style.BGColor2,
LinearGradientMode.Horizontal);
return result;
}
case BGKind.ForwardDiagonalGradient:
{
var result = new LinearGradientBrush(Region, style.BGColor, style.BGColor2,
LinearGradientMode.ForwardDiagonal);
return result;
}
case BGKind.BackwardDiagonalGradient:
{
var result = new LinearGradientBrush(Region, style.BGColor, style.BGColor2,
LinearGradientMode.BackwardDiagonal);
return result;
}
case BGKind.Solid:
default:
{
var result = new SolidBrush(style.BGColor);
return result;
}
}
}
/// <summary>
/// Creates a style in a context of control and parent. If an attribute is not defined in this instance it is tried to be fetched from parent.
/// If parent is not available then control context is used if it is not null for some properties like Font and BGColor. Both context and parent may be null
/// </summary>
public Style(Control contextCtl, Style parent)
{
m_ContextControl = contextCtl;
m_Parent = parent;
}
/// <summary>
/// Copies attributes from another style
/// </summary>
public void Assign(Style from)
{
m_HAlignment = from.m_HAlignment;
m_BGKind = from.m_BGKind;
m_BGColor = from.m_BGColor;
m_BGColor2 = from.m_BGColor2;
m_BGHatchColor = from.m_BGHatchColor;
m_BGHatchStyle = from.m_BGHatchStyle;
m_Padding = from.m_Padding;
m_BorderLeft = from.m_BorderLeft;
m_BorderRight = from.m_BorderRight;
m_BorderTop = from.m_BorderTop;
m_BorderBottom = from.m_BorderBottom;
m_Font = from.m_Font;
}
/// <summary>
/// Builds default style for data cells in non-selected rows
/// </summary>
public virtual void BuildDefaultStyle(Style style)
{
}